Plasticity-based criterion for confinement design of FRP jacketed concrete columns

Fiber reinforced polymer confined concrete exhibits different stress–strain behavior under different confinement levels. Therefore, classification of confinement levels is often the first step of jacketing design. Currently, the classification criteria are empirical and strength-based. In this paper...

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Bibliographic Details
Published in:Materials and structures 2016-06, Vol.49 (6), p.2035-2051
Main Authors: Jiang, Jia-Fei, Wu, Yu-Fei
Format: Article
Language:English
Subjects:
Building construction
Building Materials
Civil Engineering
Classification
Columns (structural)
Concretes
Confinement
Criteria
Design engineering
Engineering
Fiber reinforced plastics
Machines
Manufacturing
Materials Science
Original Article
Processes
Solid Mechanics
Stress-strain relationships
Theoretical and Applied Mechanics
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Summary:Fiber reinforced polymer confined concrete exhibits different stress–strain behavior under different confinement levels. Therefore, classification of confinement levels is often the first step of jacketing design. Currently, the classification criteria are empirical and strength-based. In this paper, a plasticity-based criterion for classification of confinement levels is developed in the framework of Drucker–Prager plasticity. The theoretically derived criterion is simple and can be conveniently used for engineering design. In addition, explicit relationships for calculating the strength and ductility ratios of FRP confined concrete columns are developed as functions of the confinement stiffness ratio and FRP rupture strain. These relationships can be conveniently used in the performance-based design of FRP jackets for concrete columns.
ISSN:1359-5997
1871-6873
DOI:10.1617/s11527-015-0632-4